Home / 151,344.72-208,880.10-87,719.22

Finding the Fourth Proportional to 151,344.72, 208,880.10 and 87,719.22

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Solution

The fourth proportional to 151,344.72, 208,880.10 and 87,719.22 is: 121,066.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,344.72 : 208,880.10 = 87,719.22 : x
  2. Step 2: Convert to fraction form
    151,344.72/208,880.10 = 87,719.22/x
  3. Step 3: Cross multiply
    151,344.72x = 208,880.10 × 87,719.22
  4. Step 4: Simplify right side
    151,344.72x = 18,322,799,445.52
  5. Step 5: Solve for x
    x = 18,322,799,445.52/151,344.72
  6. Step 6: Final answer
    x = 121,066.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.